2022 Toyota Tacoma Fuse Box Diagram & Amperage Guide

As an ASE-certified master technician, I know that dealing with electrical gremlins can be a headache. If your radio suddenly stops working, your headlights go dark, or your 12V accessories lose power, a blown fuse is often the culprit.

This guide provides a comprehensive fuse box diagram and amperage reference for the 2022 Toyota Tacoma. Remember that fuse configurations can vary slightly depending on your exact trim level (SR, SR5, TRD Sport, TRD Off-Road, Limited, or TRD Pro) and installed options like the towing package. Always verify the printed legend on the inside of your fuse box lid before replacing a fuse!

Quick Answer: Fuse Box Locations

The 2022 Toyota Tacoma has two primary fuse box locations:

1. Under-Hood / Engine Compartment Fuse Box: Located on the driver's side of the engine bay, near the battery.
2. Passenger Compartment / Interior Fuse Box: Located in the driver's side footwell, under the dashboard knee panel / kick panel area. Look for a small rectangular cover.

Engine Compartment Fuse Box Diagram

The under-hood fuse box contains high-amperage maxi-fuses (often cartridge style) and standard mini/micro fuses that protect vital engine and exterior systems, such as the ABS, engine control module (ECM), headlights, and towing circuits.

Below is a reference table for the most common and critical fuses found in the engine bay:

Note: This box also houses several relays, including the EFI relay, Fuel Pump Relay, Starter Relay, A/C Clutch Relay, and Headlight Relays. They are large, square modules labeled on the box lid.

Passenger Compartment (Under Dash) Fuse Box

The interior fuse box primarily protects cabin accessories, dashboard components, and interior lighting. It is located under the driver's side dash.

How to Test a Fuse

Before throwing parts at an electrical problem, testing the fuse is step one. Here is the professional way to do it:

1. Visual Inspection: Pull the suspect fuse using the fuse puller (usually clipped inside the under-hood fuse box lid). Hold it up to a light. If the metal "U" or "S" shaped wire inside is broken or charred, the fuse is blown.
2. Use a Test Light: Ground your test light to a solid, bare metal chassis point. Turn the key to the ON position. Probe the two tiny exposed metal test points on the top of the fuse while it is still plugged in. If the test light illuminates on one side but not the other, the fuse is blown.
3. Use a Digital Multimeter: Set your multimeter to continuity (the setting that beeps) or Ohms. Touch a probe to each test point on the top of the fuse. A continuous beep or a reading close to 0 Ohms means the fuse is good. O.L. (Open Loop) or infinite resistance means it is blown.

Never replace a fuse with one of a higher amperage rating! This can melt wiring harnesses and start a fire.

Common Blown Fuses on this Vehicle

If you drive a 2022 Tacoma, here are a few circuits that commonly pop:

• P/POINT and CIG (12V Outlets): By far the most common. Overloading the 12V sockets with high-draw air compressors, cheap phone chargers, or dropping a coin into the socket will instantly blow these 15A fuses. Check the socket for debris before replacing.
• TOWING TAIL / TOWING BRK: If you frequently tow trailers, questionable trailer wiring is a major culprit. If your truck's lights work but the trailer's don't, check these fuses under the hood first. Inspect the trailer harness for bare wires rubbing against the trailer frame.
• RADIO NO.1 / NO.2: Sometimes an internal glitch in the head unit or an aftermarket audio installation gone wrong can blow the radio fuses.

If a fuse blows repeatedly as soon as you replace it, you have a dead short to ground somewhere in that circuit. Do not keep putting fuses in it!

Find a trusted shop on Repairius.